---
schema_version: "1"
id: ca814785c0797a6cbcf2db1ae2b710c90a7fab94efc03a28de845c9b257e5d4b
title: isNumberType
collection: mulesoft
version: current
locale: en-us
portal_url: https://docs.salesforce.com/mulesoft/current/en-us/dataweave/2.4/dw-types-functions-isnumbertype.md
canonical_url: https://docs.mulesoft.com/dataweave/2.4/dw-types-functions-isnumbertype
source_site: docs.mulesoft.com
content_type: documentation
content_hash: b3d07e8afe3102fb3e7eedd057ba39eb00b3701c3171a8b9e9def5e16502f447
description: MuleSoft Documentation Site
release: "2.4"
latest: false
---
---
product: DataWeave
version: 2.4
---

# isNumberType

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## isNumberType(t: Type): Boolean

Returns `true` if the input is the Number type.

_Introduced in DataWeave version 2.3.0._

### Parameters

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p><code>t</code></p></td><td><p>The type to check.</p></td></tr></tbody></table>

### Example

This example shows how `isNumberType` behaves with different inputs.

#### Source

```DataWeave
%dw 2.0
import * from dw::core::Types
type ANumber = Number
output application/json
---
{
   a: isNumberType(ANumber),
   b: isNumberType(Number),
   c: isNumberType(String),
}
```

#### Output

```Json
{
  "a": true,
  "b": true,
  "c": false
}
```